Final answer:
The main component of a meringue dessert is the meringue itself, which is a fluffy mixture made from egg whites and sugar. An example of a dessert that features meringue as its main component is the Lemon Tart.
Step-by-step explanation:
The main component of a meringue dessert is the meringue itself. Meringue is a fluffy mixture made from egg whites and sugar that is beaten until stiff peaks form. It is often used as a topping or filling for desserts. An example of a dessert that features meringue as its main component is the Lemon Tart (option D).